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datapath: Add Stateless TCP Tunneling protocol.

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The Stateless TCP Tunnel (STT) protocol encapsulates traffic in
IPv4/TCP packets.
STT uses TCP segmentation offload available in most of NIC. On
packet xmit STT driver appends STT header along with TCP header
to the packet. For GSO packet GSO parameters are set according
to tunnel configuration and packet is handed over to networking
stack. This allows use of segmentation offload available in NICs

The protocol is documented at
http://www.ietf.org/archive/id/draft-davie-stt-06.txt

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Pravin B Shelar
2015-04-09 20:12:32 -07:00
parent a51a50862a
commit 4237026e52
14 changed files with 1920 additions and 12 deletions
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5
lib/dpif-netlink.c
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@@ -768,6 +768,9 @@ get_vport_type(const struct dpif_netlink_vport *vport)
case OVS_VPORT_TYPE_LISP:
return "lisp";
case OVS_VPORT_TYPE_STT:
return "stt";
case OVS_VPORT_TYPE_UNSPEC:
case __OVS_VPORT_TYPE_MAX:
break;
@@ -787,6 +790,8 @@ netdev_to_ovs_vport_type(const struct netdev *netdev)
return OVS_VPORT_TYPE_NETDEV;
} else if (!strcmp(type, "internal")) {
return OVS_VPORT_TYPE_INTERNAL;
} else if (strstr(type, "stt")) {
return OVS_VPORT_TYPE_STT;
} else if (!strcmp(type, "geneve")) {
return OVS_VPORT_TYPE_GENEVE;
} else if (strstr(type, "gre64")) {